181411452 has 18 divisors (see below), whose sum is σ = 458567928. Its totient is φ = 60470472.

The previous prime is 181411423. The next prime is 181411457. The reversal of 181411452 is 254114181.

It is a happy number.

181411452 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×181411452² = 65820229833496608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181411457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2519568 + ... + 2519639.

It is an arithmetic number, because the mean of its divisors is an integer number (25475996).

Almost surely, 2^181411452 is an apocalyptic number.

181411452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

181411452 is an abundant number, since it is smaller than the sum of its proper divisors (277156476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181411452 is a wasteful number, since it uses less digits than its factorization.

181411452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5039217 (or 5039212 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 181411452 is about 13468.9068598755. The cubic root of 181411452 is about 566.0935845622.

The spelling of 181411452 in words is "one hundred eighty-one million, four hundred eleven thousand, four hundred fifty-two".